Oskar mRNA becomes complexed with plus-directed motor protein in the oocyte, it moves to the growing end of the microtubules at the posterior region, where the translation occur but inhibition of Oskar translation is mediated by____

#Question id: 23567

#Unit 8. Inheritance Biology

#Question id: 11937

#Unit 7. System Physiology – Animal

Transmission of the electrical signal from the dendrites to the soma of a neuron occurs by which of the following?

#Question id: 12960

#Unit 10. Ecological Principles

The Norway rat (Rattus Norvegicus), a widespread pest, was controlled for about a decade by the anticoagulant warfarin. This chemical substance, placed in food pellets, is absorbed by the intestinal tract and inhibits the clotting of blood. After a population decline for about 10 years, rat populations increased and stabilized. In one European population, as illustrated in the graph below, the percentage of rats resistant to warfarin has remained fairly stable over a number of years.

Resistance to warfarin is governed by a dominant autosomal gene, R. More than 15 percent of the resistant animals are heterozygous at this locus (Rr). The table below indicates the response to warfarin and relative reproductive fitness of individuals that are homozygous or heterozygous for the dominant gene (R). The RR individuals have a 20-fold increase in vitamin K requirement over individuals.

#Question id: 2149

#Unit 2. Cellular Organization

A ligand-gated ion channel (such as the nicotinic acetylcholine receptor) is:

#Question id: 24510

#Unit 10. Ecological Principles

Polyphagous parasites, usually complete their life cycle at least two different host species but  not reproduce on their  host, known as;